Digboi, March 31 -- The Lekhapani Forest team, led by Ranger Parismita Neog, in collaboration with Ledu police, seized Rs 3,06,600, 35 files, and several incriminating documents on Sunday evening from the residence of Kaushal Singh, a previously arrested coal trader, in Ledu, Tinsukia district, Assam.

Police arrested at least four persons involved in the case, including three on Saturday and one on Sunday.

According to forest personnel, the notorious coal smuggler Kaushal Singh along with his accomplices Rahul Singpho and Anil Prasad was carrying 200 liters of diesel towards the said RF in a Bolero pickup vehicle AS 23 DC 1662 meant for rat-hole mining in the protected and banned areas.

Police later arrested Shrij Singh, the son of the...